2. The Second Term Of An Arithmetic Sequence Is 24 And The Fifth Term Is 3, Find The First Term And The Common Difference.,

2. The second term of an arithmetic sequence is 24 and the fifth term is 3

Find the first term and the common difference.

 

Answer:

a1=31

d=-7

Step-by-step explanation:

a2=24

a5=3

Formula for Finding C. Difference

d=An-Ak/n-k

d=3-24/5-2

d=-21/3

d= -7

3=a1+(5-1)-7

3=a1+(4)-7

3=a1+ (-28)

a1= 31

or

24=a1+(2-1)-7

24=a1+(1)-7

24=a1-7

a1=31

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